Antiskid device



Aug. 20, 1940- w. s. ROLLINGS ,2 7

ANTISKID DEVICE 3 She ets-Sheet Filed Jan. 15, 1940 :52 I WZZWZZOZZZIWS,

. ATTORNEYS ANTISKID DEVICE Filed Jan. 15, 1940 3 Sheets-Sheet 3 a ATTORNEYS Patented Aug. 20, 1940 v UNITED STATES PATENT OFFICE ANTISKID DEVICE William S. Rollings, West Newton, Pa. Application January 15, 1940, Serial No. 314,012 Claims. (CL-152-216) This invention relates to antiskid devices and Figure 6 is a plan view of the parts shown in has for an object to provide an auxiliary wheel Figure 5. adapted to be permanently attached to a motor Figure 7 is a detail sectional view showing the vehicle wheel and having antiskid cross chain lower end of one of the stems and showing the pin carrying channel bars which may be moved to for restricting the stem to endwise movement. 5 operative position on the tread of the tire without Figure 8 is a detail cross sectional view taken the use of special tools, within two or three minon the line 8-4 of Figure 4. utes' time for each wheel, and may be applied by Figure 9 is a detail cross sectional view taken unskilled persons without undue exertion. on the line 9-9 of Figure l with the locking notch 10 A further object is to provide a device of this turned through an angle of 180. 10 character in which the auxiliary wheel is attached Figure 10 is a detail cross sectional view taken to the vehicle wheel through the medium of a on the line Ill-l0 of Figure 3. single cap screw, Referring now to the drawings in which like A further object is to provide an auxiliary characters of reference designate similar parts in 13 wheel having a hub cap which may be applied to the various views, I0 designates a motor vehicle 15 hold the antiskid channel bars and cross chains in wheel, H the pneumatic tire thereof, l2 the axle folded position, without rattling, when the device housing, IS the axle, H the axle flange and I5 is not in use. the bolts which secure the wheel to the flange,

A further object is to provide a device of this these parts being conventional. character which will be formed of a few strong In carrying out the invention an auxiliary anti- 20 simple and durable parts, which will be inexpenskid wheel is provided comprising a spider l6, best sive to manufacture, and which will not easily get shown in Figure 8, which is secured to the flange v out of order. M by the bolts l5. The spider is provided with With the above and other objects in view the an integral auxiliary shaft l1 upon which is loose- 25 invention consists of certain novel details of con- ,ly mounted the hub iii of the auxiliary wheel. 5

struction and combinations of parts hereinafter The hub is held against endwise movement by a fullydescribed and claimed, it being understood non-rotating washer l9 and a combined greasing that various modifications may be resorted to fitting and cap screw 20.- within the scope of the appended claims without Formed integral with the hub I8 is a plurality 3n departing from the spirit or sacrificing any of the of spokes 2| formed of sheet metal, the outer ends advantages of the invention; of the spokes being rolled to form respective cylin- In the accompanying drawings forming part of drical housings 22. The inner ends of the spokes this specification: merge into a common disk 23 which is provided Figure l is a fragmentary side elevation of an withradially disposed guide slots 24, the purpose automobile wheel and tire equipped with an auxof which will presently appear. The disk may be 35 iliary wheel and antiskid devices constructed in locked to the shaft ll by a screw bolt 25, best accordance with the invention, and showing the shown in Figure 9. The bolt is threadedly encross chains and channel bars in operative posigaged in an opening in the disk and is headed tion. up on the inner end as shown at 26. The bolt is Figure 2 is a fragmentary side elevation of the equipped with a nut 21 having a collar 28 which parts shown in Figure 1, but showing the channel may be advanced into a notch 29 in the washer l9 bars and cross chains in folded position and held to fixedly secure the disk to the washer and shaft against rattling by a hub cap. I! and prevent rotation of the auxiliary wheel Figure 3 is a cross sectional view of the vehicle when the antiskid device is not in use. When wheel and tire and showing the antiskid chains the antiskid device is to be used the nut 21 is 5 and channel bars in the position shown in Figbacked off to free the screw 25 from the washer l9 ure 1, and permit the hub Hi to idle on the shaft l1 and Figure 4 is a cross sectional view through the thus pe mi t antiskid devices to creep on the vehicle wheel and tire and showing the cross tire and P v ury t the t echains and channel bars rocked to folded position, Loosely mounted in each housing 22 is a stem 50 as shown in Figure 2. 30, one end of which projects from the inner open Figure 5 is a detail sectional view with parts end of the housing and is eq pp d With a p 31 in elevation showing oneend of a cross chain rewhich projects into the beforementioned slot 24 ceiving channel bar and its stem the section being in the disk 23 to confine the stem to endwise movetaken on the line 5-5 of Figure 1. ment. As best shown in Figure 1,-the pin has 55 sleeved thereon a helical spring 32 which is housed in a recess 33 formed in a nut 34 which is threaded onto the inner end of the stem. The spring bears against a collar 35 on the pin and normally holds the pin yieldably engaged in the slot 24. When the pin is withdrawn from the slot against the tension of the spring the stem may be rotated on its axis for a purpose which will presently appear.

The outer end of each stem is equipped with a respective antiskid channel bar 36 having parallel flanges 31 and a web 38, as best shown in Figure 7. The ends 39 and 40 of the bar are directed at an angle to overlap the sides of the tire when the channel bar is disposedtransversely across the tread of the tire to engage the sides of the tire, and prevent twisting of the bar on the tire due to road friction.

The channel bar is extended outwardly from the end 40 to form a straight stop arm 4|, best shown in Figure 6, which is receivedbetween the flanges 42 formed on a channeled socket member 43 which is threadedly engaged with the upper end of the stem 30 and is adjustably confined in place by a lock nut 44. The flanges 42 of the socket member are provided with hinge ears 45 through which, and the inclined end 40 of the channel bar, a pivot pin 46 is passed and held in place by a cotter pin 3. The stop arm engages the web of the channel bracket 43 when the antiskid bar 36 is disposed inoperative position on the tire tread, and prevents the bar from'being thrown outwardly by centrifugal force.

The bar 36 is provided with outwardly opening hooks 41 which are struck from the web of the bar near the angularly bent ends 33 and 40. The terminal links of the antiskid cross chains 48 are hooked underneath the hooks 41.- When the cross chains are worn through at the center and become broken, the ends of the chain slip oil? of the hooks 4! and drop to the road so that the fenders of the vehicle are not mutilated.

The flanges 31 of the antiskid bar are formed with teeth 43 on the edges. These teeth form antiskid projections, which, when' the cross chains 48 are broken and eliminated, lend antiskid qualities to the bar.

A helical spring 50 is sleeved on each stem 30. The spring bears at one end against the closed outer end of the housing 22 and at the inner end bears against an adjusting nut 5| which is threaded on the stem and engages the pin carrying nut 34. The spring is under compresion and tends constantly to urge the stem 30 inwardly so that the antiskid channel bar 36 is held snugly against the tread of the tire.

When not in use the antiskid channel bars 36 are rocked on their pivots 45 to extend along the housings 22, as shown in Figure 2. For locking the antiskid bars in this position, and toprevent rattling of the bars, a hub cap 52 is applied to the disk 23 by a'pair of screws 53, best shown in Figure 4, engaged through the openings in the hub cap and threadedly engaged in openings 64 formed in the disk, as best shown in Figure 1. The hub cap is provided with slots to snugly receive the housings 22 and is provided with slots 66 to snugly receive the channel bars 36, as best shown in Figure 2.

When the antiskid auxiliary wheel is to be used, the screws 63 are unscrewed from the disk 23 and the hub cap removed. Then the antiskid bars are rocked outwardly on their pivots 46 to extend parallel with the side of the tire and then are rocked through an arc of 90 to ex-"' in each tubular spoke, spring and uncoupling the hub from securing the hub to tend transversely of the tread of the tire in which position the bars are snugly held against the tire by the compressed helical springs 60. This operation takes only a few minutes for each tire and may be performed without tools and with minimum manual effort.

When it is desired to release the antiskid bars from the tire, the bars may be rocked through an arc of 90 to extend along the side of the tire and then rocked inwardly on pivots to extend along the housings 22. The hub cap is now applied to lock the antiskid bars in released position.-

From the above description it is thought that the construction and operation of the invention will be fully understood without further explanation.

What is claimed is: I

1. The combination with the axle flange and bolts of a rubber tired motor vehicle wheel, of a spider secured to said flange by said bolts, an integral auxiliary shaft projecting from the spider disposed co-axially with the vehicle wheel, an auxiliary wheel hub on said shaft, means for coupling and uncoupling the hub from the shaft, spokes projecting from the hub, channel bars pivotally and rotatably secured at one end to the spokes and adapted to be swung transversely of the tread of the vehicle wheel tire and adapted to be folded back from the tire along said spokes, and antiskid chains carried by the channel bars.

2. The combination with a rubber tired motor vehicle wheel, of an auxiliary antiskid wheel hub carried by the vehicle wheel co-axial with the vehicle wheel, a disk integral with the hub, hollow tubular spokes projecting radially'from the disk, a stem slideably and rotatably mounted each tubular spoke connected to the stem for normally urging the stem toward the axis of the hub, a gude pin carried by each stem, radially disposed 'slots in the disk receiving respective guide pins and restricting the stem to endwise movement, means for detaching the guide pins from the slots to permit the stems to be rotated axially, channel bars pivotally secured at one end to the stems and adapted to be swung transversely of the tread of the vehicle tire and adapted to be folded back from the tire along the spokes, and antiskid cross chains carried by the channel bars.

3. The combination with a rubber tired motor vehicle wheel, of an auxiliary antiskid wheel, a hub for the auxiliary wheel, a shaft connected to the vehicle wheel co-axial with the vehicle wheel and receiving the hub, a cap screw detachably securing the hub to the shaft, means for coupling the shaft to permit the auxiliary wheel to respectively rotate as a unit with the vehicle wheel and to idle on the shaft, channel bars pivotally and rotatably secured at one end to the auxiliary wheel and adapted to be swung transversely of the tread of the tire of the vehicle wheel, and antiskid chains carried by the channel bars.

4. The combination with a rubber tired motor vehicle wheel, of an hub for the auxiliary wheel, a shaft connected to the vehicle wheel co-axial with the vehicle wheel and receiving the hub," a cap screw detachably the shaft, means for coupling and uncoupling the hub from the shaft to permit the auxiliary wheel to respectively rotate as a unit with the vehicle wheel and to idle on the shaft, channel bars pivotally and rotatably seauxiliary antiskid wheel, a.

cured at one end to the auxiliary wheel and channel socket members on the outer ends of the adapted to be swung transversely of the tread of stems, channel bars pivotally secured to .the

the tire in operative position and adapted to be socket members, stop arms extending from the swung to extend toward the axis of the auxiliary bars adapted to engage the bottom of the socket wheel in released position, antiskid chains carried members and prevent the bars being thrown outby the channel bars, and a hub cap removably wardly by centrifugal force, said bars being secured to the auxiliary wheel and having notches adapted to be swung on the stems as pivots transreceiving the channel bars for securing the chanversely of the tread of the vehicle tire, said nel bars in released position and for preventing springs holding said bars in engagement with the rattling of the channel bars. tread of the vehicle wheel tire, means for cou- 5. The combination with a rubber tired motor pling the auxiliary wheel to the vehicle wheel to vehicle wheel, of an auxiliary antiskid wheel carrotate as a unit therewith in released position ried by the vehicle wheel co-axially with the veand for uncoupling the auxiliary wheel from the hicle wheel, hollow spokes 'for the auxiliary wheel vehicle wheel to permit the channel bars to" creep forming housings closed at the outer end, stems upon the tire and not injure the tire-in operative in the housings, compression springs bearing position, and antiskid cross chains carried by the against the outer ends of the housings, said channel bars.

springs being connected to the stems and urging WILLIAM S. ROHINGS. I the stems toward the axis of the auxiliary wheel, r 

